Means for taking up drive-chains.



H. S. PIERCE.

MEANS FOR TAKING UP DRIVE CHAINS,

APPLICATION H'LED FEB. 18,1916.

1,1 98,869. 121mm 5m. 19, 1916.

2 SHEETS-SHEET I.

flaw H :5. PM 27 W3 H. S. PIERCE.

MEANS FOR TAKING UP DRIVE CHAINS,

APPLICATION FILED FEB. I8, 19H?- I x '1 1 1,198,869 lumltulbnpi. L), lJlb.

2 SHEETS-SHEET 2.

55W III/1' IIIIIIIIA IIIII centric portion of the hearing; and a pinion secured to the end of the shaft having teeth meshing with the gear teeth on the sprocket Wheel and forming a connection between the sprocket Wheel and the shaft.

The combination of a frame having a cylindrical opening therein an adjustable bearing mounted in the opening and having an eccentric projecting portion beyond the frame; means for retaining the bearing in the position to which it is adjusted; a shaft extending through the bearing and through the eccentric portion thereof, the shaft being concentric with the opening in the frame; a sprocket wheelloosely mounted on the eccentric portion of the hearing and having an annular portion projecting beyond the end of'the bearing, said annular portion having internal teeth thereon; a washer located on the shaft and at the end of the hearing and engaging the sprocket wheel; and a pinion secured to the end of the shaft, the teeth of the pinion meshing with the internal teeth on the sprocket Wheel and forming a flexible connection between the sprocket wheel and the shaft.

3. The combination in means for taking up the slack indrive chains, of a frame having a cylindrical opening therein; a hearing mounted in the opening and having a so frame and tending to turn the bearing in 35 one direction; and a sprocket wheel loosely mounted on the eccentric portion of the hearing and flexibly coupled to the shaft.

4. The combination in means for taking up the, slackin drive chains, of a frame 0 havinga cylindrical opening therein; a hearing mounted in the opening and having a projecting eccentric portion; a shaft mounted concentric with the opening in the frame and extending through the hear- 45 ing; a coiled spring attached tothe bearing and to the frame and tending to turn the hearing m-one direction; a sprocket wheel loosely mounted on the eccentric portion of the hearing and fiexlbly coupled to the shaft; a nut on the inner end of the hearing; and a spring Washer between the nut and the frame tending to hold the hearing in frictional contact with the frame.

HAROLD S. PIERCE. 

